What Is the External Anal Sphincter?

The external anus has one of the densest concentrations of nerve endings found on the human body. Nerve endings are what give the clitoris and the penis so much pleasure potential. These nerve endings are directly tied in to your sexual response cycle. External anal stimulation, just touching the outside of the butt with no intention of going inside Can add so much sensation, so much pleasure to the arousing activities you already enjoy.